Cita APA (7th ed.)

World Book, Inc. (1986). The world book atlas. World Book.

Cita Chicago (17th ed.)

World Book, Inc. The World Book Atlas. St. Leonards, N.S.W: World Book, 1986.

Cita MLA (9th ed.)

World Book, Inc. The World Book Atlas. World Book, 1986.

Atenció: Aquestes cites poden no estar 100% correctes.